WO2023225788A1

WO2023225788A1 - Wireless communication methods, terminal devices, and network devices

Info

Publication number: WO2023225788A1
Application number: PCT/CN2022/094432
Authority: WO
Inventors: 左志松; 徐伟杰; 崔胜江
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2023-11-30

Abstract

Provided in the embodiments of the present application are wireless communication methods, terminal devices, and network devices. Different terminal devices correspond to different trigger signals, so that different terminal devices can use resources indicated by resource indication information in the different trigger signals, thus realizing ordered distinguishing transmission of data of a large number of different zero-power consumption terminals in a cell, and ensuring reliable transmission of data. A wireless communication method comprises: a terminal device receives a trigger signal, wherein the trigger signal carries identification information and resource indication information, the identification information being used for indicating whether the trigger signal is a signal for the terminal device, the resource indication information being used for indicating the information of a resource occupied by data associated with the trigger signal, and the terminal device obtaining energy by means of energy acquisition for communication, information acquisition and processing.

Description

Wireless communication method, terminal equipment and network equipment

Technical field

Embodiments of the present application relate to the field of communications, and more specifically, to a wireless communication method, terminal equipment, and network equipment.

Background technique

In the process of applying zero-power technology to cellular networks, there may be a large number of different zero-power terminals in the community. How to achieve orderly and differentiated transmission of data from a large number of different zero-power terminals in the community is a problem that needs to be solved.

Contents of the invention

Embodiments of the present application provide a wireless communication method, terminal equipment and network equipment. Different terminal equipment corresponds to different trigger signals. Therefore, different terminal equipment can use resources indicated by resource indication information in different trigger signals. , can achieve orderly and differentiated transmission of data from a large number of different zero-power terminals in the community, ensuring reliable transmission of data.

In a first aspect, a wireless communication method is provided, which method includes:

The terminal device receives the trigger signal;

The trigger signal carries identification information and resource indication information. The identification information is used to indicate whether the trigger signal is a signal for the terminal device. The resource indication information is used to indicate resource information occupied by data associated with the trigger signal. , the terminal equipment obtains energy through energy collection for communication, information collection and processing.

In a second aspect, a wireless communication method is provided, which method includes:

The network device sends a trigger signal;

Wherein, the trigger signal carries identification information and resource indication information, the identification information is used to indicate whether the trigger signal is a signal for the terminal device, and the resource indication information is used to indicate the resource information occupied by the data associated with the trigger signal, The terminal device obtains energy through energy harvesting for communication, information collection and processing.

A third aspect provides a terminal device for executing the method in the first aspect.

Specifically, the terminal device includes a functional module for executing the method in the first aspect.

A fourth aspect provides a network device for performing the method in the above second aspect.

Specifically, the network device includes a functional module for executing the method in the above second aspect.

In a fifth aspect, a terminal device is provided, including a processor and a memory; the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the above-mentioned first aspect. Methods.

In a sixth aspect, a network device is provided, including a processor and a memory; the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the network device performs the above-mentioned second aspect. Methods.

A seventh aspect provides an apparatus for implementing the method in any one of the above first to second aspects.

Specifically, the device includes: a processor, configured to call and run a computer program from a memory, so that a device installed with the device executes the method in any one of the above-mentioned first to second aspects.

An eighth aspect provides a computer-readable storage medium for storing a computer program that causes a computer to execute the method in any one of the above-mentioned first to second aspects.

In a ninth aspect, a computer program product is provided, including computer program instructions, which cause a computer to execute the method in any one of the above-mentioned first to second aspects.

A tenth aspect provides a computer program that, when run on a computer, causes the computer to execute the method in any one of the above-mentioned first to second aspects.

Through the above technical solution, the trigger signal received by the terminal device carries identification information and resource indication information. The identification information is used to indicate whether the trigger signal is a signal for the terminal device. The resource indication information is used to indicate whether the trigger signal is associated with the trigger signal. Resource information occupied by data. That is to say, different terminal devices correspond to different trigger signals. Therefore, different terminal devices can use the resources indicated by the resource indication information in different trigger signals, which can realize the ordering of data of a large number of different zero-power terminals in the cell. Differential transmission ensures reliable transmission of data.

Description of the drawings

Figure 1 is a schematic diagram of a communication system architecture applied in an embodiment of the present application.

Figure 2 is a schematic diagram of an example zero-power communication system provided by this application.

Figure 3 is a schematic diagram of energy harvesting provided by this application.

Figure 4 is a schematic diagram of backscatter communication provided by this application.

Figure 5 is a circuit schematic diagram of resistive load modulation provided by this application.

Figure 6 is a schematic diagram of the symmetrical frequency-shifted reflection produced in the transmission frequency domain provided by this application.

Figure 7 is a schematic diagram of an energy supply signal and a backscattered signal provided by an embodiment of the present application.

Figure 8 is a schematic diagram of another energy supply signal and backscattered signal provided by an embodiment of the present application.

Figure 9 is a schematic interactive flow chart of a wireless communication method provided according to an embodiment of the present application.

Figure 10 is a schematic diagram of a time-frequency resource provided according to an embodiment of the present application.

Figure 11 is a schematic diagram of another time-frequency resource provided according to an embodiment of the present application.

Figure 12 is a schematic diagram of amplitude modulation provided according to an embodiment of the present application.

Figure 13 is a schematic flow chart of downlink data transmission according to an embodiment of the present application.

Figure 14 is a schematic flow chart of uplink data transmission according to an embodiment of the present application.

Figure 15 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

Figure 16 is a schematic block diagram of a network device provided according to an embodiment of the present application.

Figure 17 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

Figure 18 is a schematic block diagram of a device provided according to an embodiment of the present application.

Figure 19 is a schematic block diagram of a communication system provided according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Regarding the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Internet of Things ( internet of things (IoT), wireless fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, Sidelink (SL) communication, Internet of Vehicles ( Vehicle to everything, V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

In some embodiments, the communication system in the embodiments of the present application can be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA) scenario. ) network deployment scenario, or applied to Non-Standalone (NSA) network deployment scenario.

In some embodiments, the communication system in the embodiments of the present application can be applied to unlicensed spectrum, where the unlicensed spectrum can also be considered as shared spectrum; or, the communication system in the embodiments of the present application can also be applied to licensed spectrum, Among them, licensed spectrum can also be considered as unshared spectrum.

In some embodiments, the communication system in the embodiment of the present application can be applied to the FR1 frequency band (corresponding to the frequency band range 410MHz to 7.125GHz), can also be applied to the FR2 frequency band (corresponding to the frequency band range 24.25GHz to 52.6GHz), and can also be applied to The new frequency band, for example, corresponds to the frequency band range of 52.6 GHz to 71 GHz or the high frequency band corresponding to the frequency band range of 71 GHz to 114.25 GHz.

The embodiments of this application describe various embodiments in combination with network equipment and terminal equipment. The terminal equipment may also be called user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc.

The terminal device can be a station (STATION, ST) in the WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, or a personal digital assistant. (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or in the future Terminal equipment in the evolved Public Land Mobile Network (PLMN) network, etc.

In the embodiment of this application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites). superior).

In the embodiment of this application, the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, or an augmented reality (Augmented Reality, AR) terminal. Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city (smart city) or wireless terminal equipment in smart home (smart home), vehicle-mounted communication equipment, wireless communication chip/application specific integrated circuit (ASIC)/system on chip (System on Chip, SoC), etc.

As an example and not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices. It is a general term for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes, etc. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly defined wearable smart devices include full-featured, large-sized devices that can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones. Use, such as various types of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In the embodiment of this application, the network device may be a device used to communicate with mobile devices. The network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA. , or it can be a base station (NodeB, NB) in WCDMA, or an evolutionary base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network network equipment or base station (gNB) or network equipment in the future evolved PLMN network or network equipment in the NTN network, etc.

As an example and not a limitation, in the embodiment of the present application, the network device may have mobile characteristics, for example, the network device may be a mobile device. In some embodiments, network devices may be satellites or balloon stations. For example, the satellite can be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite ) satellite, etc. In some embodiments, the network device may also be a base station installed on land, water, or other locations.

In this embodiment of the present application, network equipment can provide services for a cell, and terminal equipment communicates with the network equipment through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell. The cell can be a network equipment ( For example, the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell). The small cell here can include: urban cell (Metro cell), micro cell (Micro cell), pico cell ( Pico cell), femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission services.

Exemplarily, the communication system 100 applied in the embodiment of the present application is shown in Figure 1 . The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (also referred to as a communication terminal or terminal). The network device 110 can provide communication coverage for a specific geographical area and can communicate with terminal devices located within the coverage area.

Figure 1 exemplarily shows one network device and two terminal devices. In some embodiments, the communication system 100 may include multiple network devices and other numbers of terminal devices may be included within the coverage of each network device. The embodiments of the present application do not limit this.

In some embodiments, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiments of the present application.

It should be understood that in the embodiments of this application, devices with communication functions in the network/system may be called communication devices. Taking the communication system 100 shown in Figure 1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions. The network device 110 and the terminal device 120 may be the specific devices described above, which will not be described again here. ; The communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities and other network entities, which are not limited in the embodiments of this application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship that describes related objects, indicating that three relationships can exist. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and they exist alone. B these three situations. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

It should be understood that this article involves a first communication device and a second communication device. The first communication device may be a terminal device, such as a mobile phone, a machine facility, a Customer Premise Equipment (CPE), industrial equipment, a vehicle, etc.; the second communication device The device may be a peer communication device of the first communication device, such as a network device, a mobile phone, an industrial device, a vehicle, etc. In this embodiment of the present application, the first communication device may be a terminal device, and the second communication device may be a network device (ie, uplink communication or downlink communication).

The terms used in the embodiments of the present application are only used to explain specific embodiments of the present application and are not intended to limit the present application. The terms “first”, “second”, “third” and “fourth” in the description, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific sequence. . Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

It should be understood that the "instruction" mentioned in the embodiments of this application may be a direct instruction, an indirect instruction, or an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B. relation.

In the description of the embodiments of this application, the term "correspondence" can mean that there is a direct correspondence or indirect correspondence between the two, it can also mean that there is an associated relationship between the two, or it can mean indicating and being instructed, configuration and being. Configuration and other relationships.

In the embodiment of this application, "predefinition" or "preconfiguration" can be achieved by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices). The application does not limit its specific implementation method. For example, predefined can refer to what is defined in the protocol.

In the embodiments of this application, the "protocol" may refer to a standard protocol in the communication field, for example, it may be an evolution of the existing LTE protocol, NR protocol, Wi-Fi protocol or protocols related to other communication systems. The application does not limit the type of agreement.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The following related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application. The embodiments of this application include at least part of the following contents.

In recent years, the application of zero-power devices has become more and more widespread. A typical zero-power device is Radio Frequency Identification (RFID), which is a technology that uses radio coupling at the transceiver and receiver to achieve contactless automatic transmission and identification of tag information. This includes short-range inductive coupling and long-range electromagnetic coupling. RFID tags are also called "radio frequency tags" or "electronic tags". The types of electronic tags classified according to different power supply methods can be divided into active electronic tags, passive electronic tags and semi-passive electronic tags. Active electronic tags, also known as active electronic tags, refer to electronic tags with built-in batteries that provide energy for operation. Different from the passive radio frequency activation method, the tag can actively send information in the set frequency band. Passive electronic tags, also known as passive electronic tags, do not support built-in batteries. When a passive electronic tag approaches a reader-writer, the electronic tag antenna within the near-field range formed by the radiation of the reader-writer antenna generates an induced current through electromagnetic induction, and the induced current drives the electronic tag chip circuit. The chip circuit sends the identification information stored in the tag to the reader through the electronic tag antenna. Semi-active electronic tags inherit the advantages of passive electronic tags such as small size, light weight, low price and long service life. The built-in battery only provides power for a few circuits in the chip when there is no reader/writer access. When the reader is accessed, the built-in battery supplies power to the RFID chip to increase the reading and writing distance of the tag and improve the reliability of communication.

As a wireless communication technology, the most basic RFID system is composed of two parts: electronic tag (TAG) and reader/writer (Reader/Writer). Electronic tag: It is composed of coupling components and chips. Each electronic tag has a unique electronic code and is placed on the measured target to achieve the purpose of marking the target object. Reader/writer: It can not only read the information on the electronic tag, but also write the information on the electronic tag, and at the same time provide the electronic tag with the energy required for communication. as shown in picture 2. After the electronic tag enters the electromagnetic field, it receives the radio frequency signal from the reader. The passive electronic tag or passive electronic tag uses the energy obtained from the electromagnetic field generated in the space to transmit the information stored in the electronic tag. The reader reads the information and performs the processing. Decode to identify the electronic tag.

RFID is a zero-power communication. This type of key zero-power communication technology includes energy harvesting and backscatter communication as well as low-power computing. As shown in Figure 2, a typical zero-power communication system includes a reader/writer and a zero-power terminal. The reader emits radio waves that are used to provide energy to zero-power terminals. The energy collection module installed in the zero-power terminal can collect the energy carried by radio waves in space (shown in Figure 2 is the radio wave emitted by the reader), and is used to drive the low-power computing module of the zero-power terminal and Implement backscatter communication. After the zero-power terminal obtains energy, it can receive control commands from the reader and send data to the reader in a backscattering manner based on control signaling. The data sent can come from the data stored in the zero-power terminal itself (such as identification or pre-written information, such as the product's production date, brand, manufacturer, etc.). Zero-power terminals can also be loaded with various sensors to report data collected by various sensors based on a zero-power mechanism.

Zero-power communication uses energy harvesting and backscatter communication technology. A zero-power communication network consists of network equipment and zero-power terminals. As shown in Figure 2, network equipment is used to send wireless power supply signals, downlink communication signals to zero-power terminals, and receive backscattered signals from zero-power terminals. A basic zero-power terminal includes an energy harvesting module, a backscatter communication module and a low-power computing module. In addition, the zero-power terminal can also be equipped with a memory or sensor to store some basic information (such as item identification, etc.) or obtain sensing data such as ambient temperature and ambient humidity.

The following describes the key technologies in zero-power communication.

Radio Frequency Power Harvesting

As shown in Figure 3, the RF energy collection module collects space electromagnetic wave energy based on the principle of electromagnetic induction, thereby obtaining the energy required to drive zero-power terminals, such as driving low-power demodulation and modulation modules, sensors, and Memory reading, etc. Therefore, zero-power terminals do not require traditional batteries.

Back Scattering

As shown in Figure 4, the zero-power terminal receives the carrier signal sent by the network device, modulates the carrier signal, loads the information that needs to be sent, and radiates the modulated signal from the antenna. This information transmission process is called for backscatter communications. Backscatter and load modulation functions are inseparable. Load modulation adjusts and controls the circuit parameters of the oscillation circuit of the zero-power terminal according to the rhythm of the data flow, so that the parameters such as the impedance of the electronic tag change accordingly, thereby completing the modulation process. Load modulation technology mainly includes two methods: resistive load modulation and capacitive load modulation. In resistive load modulation, the load is connected in parallel with a resistor, which is turned on or off based on control of a binary data stream, as shown in Figure 5. The switching of the resistor will cause the circuit voltage to change, so amplitude keying modulation (ASK) is implemented, that is, the signal is modulated and transmitted by adjusting the amplitude of the backscattered signal from the zero-power terminal. Similarly, in capacitive load modulation, the resonant frequency of the circuit can be changed by switching the capacitor on and off to achieve frequency keying modulation (FSK), that is, the signal is modulated by adjusting the operating frequency of the backscattered signal of the zero-power terminal. and transmission.

It can be seen that the zero-power terminal uses load modulation to perform information modulation on the incoming signal, thereby realizing the backscattering communication process. Therefore, zero-power terminals have significant advantages:

(1) The terminal does not actively transmit signals, so there is no need for complex radio frequency links, such as PA, radio frequency filters, etc.;

(2) The terminal does not need to actively generate high-frequency signals, so there is no need for a high-frequency crystal oscillator;

(3) With backscatter communication, terminal signal transmission does not need to consume the terminal’s own energy.

Coding technology

The data transmitted by electronic tags can use different forms of codes to represent binary "1" and "0". Radio frequency identification systems usually use one of the following encoding methods: reverse non-return to zero (NRZ) encoding, Manchester encoding, unipolar return to zero (Unipolar RZ) encoding, differential biphase (DBP) encoding, Differential encoding, pulse interval encoding (PIE), bidirectional spatial encoding (FM0), Miller encoding, differential encoding, etc. Generally speaking, different pulse signals are used to represent 0 and 1.

In some scenarios, based on the energy source and usage of zero-power terminals, zero-power terminals can be divided into passive zero-power terminals, semi-passive zero-power terminals and active zero-power terminals.

Passive zero power terminal

A zero-power terminal does not need a built-in battery. When a zero-power terminal is close to a network device (such as a reader/writer of an RFID system), the zero-power terminal is within the near field range formed by the antenna radiation of the network device. Therefore, the zero-power terminal antenna generates an induced current through electromagnetic induction, and the induced current drives the low-power chip circuit of the zero-power terminal. Realizes the demodulation of the forward link signal and the signal modulation of the reverse link. For backscatter links, zero-power terminals use backscatter implementations to transmit signals.

It can be seen that the passive zero-power terminal does not require a built-in battery to drive either the forward link or the reverse link, and is a true zero-power terminal.

Passive zero-power terminals do not require batteries, and the RF circuit and baseband circuit are very simple, such as low-noise amplifier (LNA), power amplifier (PA), crystal oscillator, and analog-to-digital converter (Analog-to-Digital Converter, ADC). and other devices, so it has many advantages such as small size, light weight, very cheap price, long service life, etc.

Semi-passive zero-power terminal

The semi-passive zero-power terminal itself does not install a conventional battery, but can use an RF energy collection module to collect radio wave energy and store the collected energy in an energy storage unit (such as a capacitor). After the energy storage unit obtains energy, it can drive the low-power chip circuit of the zero-power terminal. Realizes the demodulation of the forward link signal and the signal modulation of the reverse link. For backscatter links, zero-power terminals use backscatter implementations to transmit signals.

It can be seen that the semi-passive zero-power terminal does not require a built-in battery to drive either the forward link or the reverse link. Although the energy stored in the capacitor is used in operation, the energy comes from the radio collected by the energy collection module. energy, so it is also a truly zero-power terminal.

Semi-passive zero-power terminals inherit many advantages of passive zero-power terminals, so they have many advantages such as small size, light weight, very cheap price, and long service life.

Active zero power terminal

The zero-power terminals used in some scenarios can also be active zero-power terminals, and such terminals can have built-in batteries. Batteries are used to drive low-power chip circuits in zero-power terminals. Realizes the demodulation of the forward link signal and the signal modulation of the reverse link. But for backscatter links, zero-power terminals use backscatter implementations to transmit signals. Therefore, the zero power consumption of this type of terminal is mainly reflected in the fact that signal transmission in the reverse link does not require the terminal's own power, but uses backscattering.

Active zero-power terminal has a built-in battery that supplies power to the RFID chip to increase the reading and writing distance of the tag and improve the reliability of communication. Therefore, it can be used in some scenarios that have relatively high requirements on communication distance, read latency, etc.

Received Signal Strength (RSS) positioning

RSS positioning technology is a method of positioning based on the change of signal strength with propagation distance. Its positioning core is to determine the target position based on the signal strength received by multiple reference nodes from the same target source. RSS positioning technology is currently widely used in indoor positioning. The traditional RSS positioning technology based on geometric measurement method first needs to measure the signal strength RSS received by each monitoring node from the target, and then reversely calculate the propagation distance d between each node and the target based on the signal transmission attenuation model, and then estimate the signal source to be located. relative geographical location.

Cellular Passive IoT

As 5G industry applications increase, there are more and more types of connected objects and application scenarios, and there will be higher requirements for the price and power consumption of communication terminals. The application of battery-free, low-cost passive IoT devices has become a key technology for cellular IoT, enriching the type and number of 5G network link terminals and truly realizing the interconnection of all things. Among them, passive IoT devices can be used in cellular IoT based on existing zero-power devices.

subcarrier modulation

Subcarrier modulation means that the signal is first modulated on carrier 1 (i.e. subcarrier). For some reason, it is decided to perform modulation again, and then the result is used to modulate another carrier 2 with a higher frequency. Subcarrier modulation is a modulation method often used in RFID systems.

In cellular networks, traditional terminal devices require battery power. Introducing zero-power terminals into cellular networks requires energy supply signals through base stations or other sources for zero-power devices to obtain energy. In Figure 6, the zero-power terminal provides trigger signals and energy through the downlink (DL) frequency. Information is fed back to the base station at the uplink (UL) frequency through backscattering. The time and frequency of backscatter can differ from the incident signal. In Figure 6, the transmit frequency domain will produce symmetrical frequency-shifted reflections, and only one of the frequency points is picked up through technologies such as filters.

In some embodiments, through a reflection processing timing (delay) mechanism, the signal can also be reflected at a specific time, that is, the time of backscattering can be controlled.

In order to facilitate understanding of the embodiments of the present application, the problems solved by the present application are described below.

Applying zero-power technology to cellular networks requires orderly coordination of multiple terminals using different time-frequency resources. Taking the NR system as an example, cellular networks can flexibly configure resources at different frequencies. In the duplex mode of Frequency Division Duplex (FDD), network equipment transmits signals on DL resources, and the corresponding terminal should transmit signals on UL resources. DL and UL are separated by frequency. On UL, there are multiple terminals in the network equipment to reflect signals, which requires time-frequency resource indications from multiple terminals. How to allow different terminals to occupy different resources, such as different positions in the time domain, frequency domain and even code domain, is a problem that needs to be solved.

Based on the above problems, this application proposes a zero-power backscatter communication solution. Different zero-power terminals use different resources, which can solve the problem of orderly and differentiated transmission of data from a large number of different zero-power terminals in the community. , ensuring reliable transmission of data.

In the embodiment of the present application, the signal for power supply in the cellular network and the signal for information transmission (trigger signal) may be two signals or one signal. These two signals may not be sent in the same frequency band, or they may be sent at the same frequency point. An energy supply signal that can be sent continuously or intermittently in a certain frequency band is a continuous wave (CW), such as a sine wave. Both the energy supply signal and the trigger signal can be sent by the base station of the cellular network, as shown in Figure 7. Alternatively, the energy supply signal is sent by a dedicated node, as shown in Figure 8. The zero-power terminal collects energy. After the zero-power terminal obtains energy, it can perform corresponding signal reception, signal reflection, measurement and other functions.

This application mainly achieves multiplexing of multiple terminals by scheduling time-frequency resources and other parameters of zero-power terminals to receive data, reflected data and reflected feedback control information through the base station.

The technical solutions of the present application are described in detail below through specific examples.

Figure 9 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application. As shown in Figure 9, the wireless communication method 200 may include at least part of the following content:

S210, the network device sends a trigger signal; wherein, the trigger signal carries identification information and resource indication information, the identification information is used to indicate whether the trigger signal is a signal for the terminal device, and the resource indication information is used to indicate that the trigger signal is associated with The resource information occupied by the data, the terminal device obtains energy through energy collection for communication, information collection and processing;

S220: The terminal device receives the trigger signal.

In the embodiment of this application, the terminal device obtains energy through energy collection for communication, information collection and processing. That is, before the network device communicates with the terminal device, it first needs to ensure that the terminal device receives the radio for wireless power supply. waves and obtain wireless energy through energy harvesting. That is to say, the terminal device can be a zero-power consumption terminal, and the embodiments of the present application can be applied to zero-power communication technology. It should be understood that this application does not limit the specific way in which the terminal device obtains energy through energy harvesting. As an example and not a limitation, the terminal device can obtain energy through wireless energy supply methods such as wireless radio frequency signals, solar energy, pressure or temperature.

In this embodiment of the present application, the trigger signal received by the terminal device carries identification information and resource indication information. The identification information is used to indicate whether the trigger signal is a signal for the terminal device. The resource indication information is used to indicate the trigger signal. Resource information occupied by associated data. That is to say, different terminal devices correspond to different trigger signals. Therefore, different terminal devices can use the resources indicated by the resource indication information in different trigger signals, which can realize the ordering of data of a large number of different zero-power terminals in the cell. Differential transmission ensures reliable transmission of data. In other words, this application overcomes the problem in the existing zero-power communication technology that data from different zero-power terminals cannot be differentially transmitted, and solves the problem of orderly differential transmission of data from a large number of different terminals in the community. Through the embodiments of this application, a terminal can effectively and simply use resources for zero-power communication.

In some embodiments, the trigger signal is used to trigger the terminal corresponding to the identification information it carries to send and receive data.

In some embodiments, the embodiments of the present application are not limited to data transmission, but can also be used for initial access, paging and other occasions.

In the embodiment of the present application, the network device is used to schedule the resource information of the terminal device (such as a zero-power consumption terminal) to receive data, and/or the network device is used to schedule the resource information of the terminal device (such as a zero-power consumption terminal) to reflect the data, and /Or, the network device schedules the resource information of the feedback information reflected by the terminal device (such as a zero-power terminal) to achieve resource multiplexing of multiple terminals (such as a zero-power terminal).

In some embodiments, signals backscattered by different terminals occupy the same or different resources.

In some embodiments, after receiving the trigger signal, the terminal device determines whether the trigger signal is a signal for the terminal device based on the identification information carried by the trigger signal. Specifically, when it is determined that the trigger signal is not a signal for the terminal device, the terminal device ignores the trigger signal, or the terminal device deletes or discards the trigger signal; when it is determined that the trigger signal is for the terminal device In the case of a signal, the terminal device can determine the resource information occupied by the data associated with the trigger signal based on the resource indication information carried by the trigger signal, and transmit and receive data on the corresponding resources.

In some embodiments, the trigger signal may be sent by broadcast, multicast, or multicast.

In the embodiment of this application, the "backscattered signal" may also be called a "reflected signal" or a "reflected signal", which is not limited by this application.

In some embodiments, the embodiments of the present application can also implement the same function as the trigger signal through other signals, such as data transmission signals, resource indication signals, energy supply signals, etc., which the present application is not limited to.

In some embodiments, the trigger signal is an energy supply signal of the terminal device. That is to say, the energy supply and triggering can be integrated and sent as one node, or synthesized into one signal.

In some embodiments, the terminal device obtains energy through an energy supply signal continuously sent by the network device. For example, the continuously transmitted energy supply signal is a constant-amplitude continuous wave signal or an energy-carrying signal of other waveforms. In some embodiments, the energy supply signal provided by a third-party device can also be used as the energy supply signal of the terminal device.

In some embodiments, the identification information is a terminal inherent identification. Optionally, the terminal device reports its inherent identity during the registration process, or the terminal device reports its inherent identity in advance through other means. Specifically, user equipment that receives data and reflects data is distinguished based on terminal inherent identification, which can greatly avoid interference between multiple users.

For example, if the identification information carried in the trigger signal is the inherent identification of the terminal device, the trigger signal is a signal targeted at the terminal device; otherwise, the trigger signal is not a signal targeted at the terminal device.

In some embodiments, the terminal inherent identification may also be called terminal permanent identification or terminal permanent identity identification.

In some embodiments, the identification information is a terminal identification registered in the network. That is, the identification information may be a temporary terminal identification assigned by the network during the registration process. Specifically, user equipment that receives data and reflects data is distinguished based on the identity of the terminal registered in the network, which can greatly avoid interference between multiple users.

For example, if the identification information carried in the trigger signal is the identity of the terminal device registered in the network, the trigger signal is a signal for the terminal device; otherwise, the trigger signal is not a signal for the terminal device.

In some embodiments, the embodiments of the present application can also be used for data transmission processing in cellular networks to differentiate terminals that transmit data based on identification information.

In some embodiments, the data associated with the trigger signal includes at least one of the following: downlink data, uplink data, and sidelink data. That is, the trigger signal can trigger the terminal device to receive downlink data, the trigger signal can also trigger the terminal device to send downlink data through backscattering, and the trigger signal can also trigger the terminal device to send sidelink data through backscattering. Data, or combination.

In some embodiments, the resources indicated by the resource indication information include at least one of the following: time domain resources, frequency domain resources, code domain resources, and air domain resources. Optionally, the frequency domain resource occupies at least one carrier in the frequency domain, or the frequency domain resource occupies at least one subcarrier in the frequency domain. That is, the resource indicated by the resource indication information may occupy at least one carrier or at least one subcarrier in the frequency domain, and each carrier or subcarrier is divided into multiple slices in the time domain. For example, the resources indicated by the resource indication information include time domain resources and frequency domain resources. When the data associated with the trigger signal is downlink (DL) data, the resources indicated by the resource indication information can be as shown in the figure As shown in Figure 10; when the data associated with the trigger signal is uplink (UL) data, the resource indicated by the resource indication information can be as shown in Figure 11.

The embodiment of the present application can reuse the user's time domain structure, and can provide certain timing control to coordinate the time domain structure of uplink and downlink data. Ensure that terminals and networks can process information in a timely manner.

In some embodiments, the resource indication information at least includes an offset value relative to the reference resource location. For example, the reference resource location may be configured by a network device, or the reference resource location may be agreed upon by a protocol. Specifically, the terminal device may determine the resource information occupied by the data associated with the trigger signal based on the reference resource location and the offset value relative to the reference resource location. Optionally, the offset value relative to the reference resource position may be a time domain offset value, a frequency domain offset value, a code domain offset value, a spatial domain offset value, or a combination of , this application is not limited to this.

In some embodiments, the resource indication information at least includes an offset value based on the resource location occupied by the trigger signal. Specifically, the terminal device may determine the resource information occupied by the data associated with the trigger signal based on the resource location occupied by the trigger signal and the offset value based on the resource location occupied by the trigger signal. Optionally, the offset value based on the resource location occupied by the trigger signal may be a time domain offset value, a frequency domain offset value, a code domain offset value, or a spatial domain offset value. The offset value or combination is not limited by this application.

In some embodiments, the trigger signal carries the identification information and the resource indication information through one of the following modulation methods:

Amplitude modulation, phase modulation, frequency modulation.

In other words, the network device can make the trigger signal carry identification information and resource indication information through one of the following modulation methods:

Amplitude modulation, phase modulation, frequency modulation.

For example, amplitude modulation (using direct high and low level coding) can be shown in Figure 12.

In some embodiments, the trigger signal also carries at least one of the following information corresponding to the data associated with the trigger signal:

Modulation order, modulation method, coding rate, coding method, number of data bits.

For example, the encoding method may be convolutional code, Reed-muller code, or Polar code. Specifically, the encoding method can also be obtained implicitly through other parameters (such as payload size and number of data bits) (for example, the difference between payload size and number of data bits).

Optionally, the trigger signal carries information corresponding to the data associated with the trigger signal through one of the following modulation methods:

Amplitude modulation, phase modulation, frequency modulation.

Specifically, the terminal device may decode or encode data based on information corresponding to the data associated with the trigger signal.

In some embodiments, when the identification information indicates that the trigger signal is a signal for the terminal device, the terminal device determines resource information occupied by data associated with the trigger signal based on the resource indication information.

In some embodiments, when the data associated with the trigger signal is downlink data, the terminal device receives (decodes and demodulates) the data associated with the trigger signal according to the resource information occupied by the data associated with the trigger signal.

In some embodiments, when the data associated with the trigger signal is downlink data, the resource indication information is also used to indicate resource information occupied by feedback information corresponding to the data associated with the trigger signal. Specifically, the terminal device determines the resource information occupied by the feedback information corresponding to the data associated with the trigger signal according to the resource indication information; the terminal device sends the first resource information occupied by the feedback information corresponding to the data associated with the trigger signal. A backscattered signal, wherein the first backscattered signal carries feedback information corresponding to data associated with the trigger signal. Specifically, the terminal device is used to respond and feedback to reflect whether the downlink data is received correctly, or to reflect the uplink data, which can ensure reliable transmission of uplink and downlink data.

In some embodiments, the first backscattered signal carries feedback information corresponding to the data associated with the trigger signal through one of the following modulation methods:

Amplitude modulation, phase modulation, frequency modulation.

For example, when the data associated with the trigger signal is downlink data, that is, the trigger signal is used to trigger or instruct the terminal device to receive downlink data. As shown in Figure 13, the terminal device decodes the trigger signal and The identification information and resource indication information carried by the trigger signal are obtained. When the trigger signal is determined to be a signal for the terminal device based on the identification information, the terminal device decodes downlink data according to the resource indicated by the resource indication information. Optionally, when the data is decoded successfully, the terminal device feeds back an acknowledgment (ACK) through backscattering; when the data decoding fails or is not decoded, the terminal device feeds back a negative acknowledgment through backscattering. Response (Negative Acknowledgment, NACK).

In some embodiments, when the data associated with the trigger signal is uplink data or sidelink data, the terminal device sends the second backscatter signal according to the resource information occupied by the data associated with the trigger signal, wherein, the The second backscattered signal carries data associated with the trigger signal.

In some embodiments, the modulation method adopted by the data associated with the trigger signal includes one of the following:

Amplitude modulation, phase modulation, frequency modulation.

For example, when the data associated with the trigger signal is uplink data, that is, the trigger signal is used to request or instruct the terminal device to send uplink data. As shown in Figure 14, the terminal device decodes the trigger signal and Obtain the identification information and resource indication information carried by the trigger signal. When it is determined that the trigger signal is a signal for the terminal device based on the identification information, the terminal device uses the backscattering method according to the resource indicated by the resource indication information. Send uplink data. Optionally, when the uplink data is successfully decoded, the network device feeds back an ACK; when the uplink data fails to be decoded or is not decoded, the network device feeds back a NACK.

Therefore, in this embodiment of the present application, the trigger signal received by the terminal device carries identification information and resource indication information. The identification information is used to indicate whether the trigger signal is a signal for the terminal device, and the resource indication information is used to indicate that the trigger signal is for the terminal device. Resource information occupied by data associated with the trigger signal. That is to say, different terminal devices correspond to different trigger signals. Therefore, different terminal devices can use the resources indicated by the resource indication information in different trigger signals, which can realize the ordering of data of a large number of different zero-power terminals in the cell. Differential transmission ensures reliable transmission of data.

The method embodiments of the present application are described in detail above with reference to Figures 9 to 14. The device embodiments of the present application are described in detail below with reference to Figures 15 to 19. It should be understood that the device embodiments and the method embodiments correspond to each other, and are similar to The description may refer to the method embodiments.

Figure 15 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application. As shown in Figure 15, terminal device 300 includes:

Communication unit 310, used to receive trigger signals;

In some embodiments, the resource indication information at least includes an offset value relative to a reference resource location, or the resource indication information at least includes an offset value based on the resource location occupied by the trigger signal.

In some embodiments, the identification information is a terminal inherent identification, or the identification information is a terminal identification registered in the network.

In some embodiments, the resources indicated by the resource indication information include at least one of the following: time domain resources, frequency domain resources, code domain resources, and air domain resources.

In some embodiments, the frequency domain resource occupies at least one carrier in the frequency domain, or the frequency domain resource occupies at least one subcarrier in the frequency domain.

In some embodiments, the data associated with the trigger signal includes at least one of the following: downlink data, uplink data, and sidelink data.

Amplitude modulation, phase modulation, frequency modulation.

In some embodiments, when the identification information indicates that the trigger signal is a signal for the terminal device, the terminal device 300 further includes: a processing unit 320;

The processing unit 320 is configured to determine resource information occupied by data associated with the trigger signal according to the resource indication information.

In some embodiments, the data associated with the trigger signal is downlink data, and the terminal device 300 further includes: a processing unit 320;

The processing unit 320 is configured to receive the data associated with the trigger signal according to the resource information occupied by the data associated with the trigger signal.

In some embodiments, the resource indication information is also used to indicate the resource information occupied by the feedback information corresponding to the data associated with the trigger signal, and the processing unit 320 is also used to determine the data corresponding to the trigger signal based on the resource indication information. The resource information occupied by the feedback information;

The processing unit 320 is also configured to send a first backscatter signal according to the resource information occupied by the feedback information corresponding to the data associated with the trigger signal, wherein the first backscatter signal carries the data corresponding to the trigger signal. Feedback.

Amplitude modulation, phase modulation, frequency modulation.

In some embodiments, the data associated with the trigger signal is uplink data or sidelink data, and the terminal device 300 further includes: a processing unit 320;

The processing unit 320 is further configured to send a second backscattered signal according to the resource information occupied by the data associated with the trigger signal, wherein the second backscattered signal carries the data associated with the trigger signal.

Amplitude modulation, phase modulation, frequency modulation.

In some embodiments, the trigger signal is an energy supply signal of the terminal device.

In some embodiments, the terminal device 300 further includes: a processing unit 320;

The processing unit 320 is used to obtain energy through energy supply signals continuously sent by the network device.

In some embodiments, the continuously transmitted energy supply signal is a constant amplitude continuous wave signal.

In some embodiments, the above-mentioned communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip. The above-mentioned processing unit may be one or more processors.

It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above and other operations and/or functions of each unit in the terminal device 300 are respectively to implement the method shown in Figure 9 The corresponding process of the terminal equipment in 200 will not be repeated here for the sake of simplicity.

Figure 16 shows a schematic block diagram of a network device 400 according to an embodiment of the present application. As shown in Figure 16, network device 400 includes:

Communication unit 410, used to send trigger signals;

Amplitude modulation, phase modulation, frequency modulation.

In some embodiments, when the identification information indicates that the trigger signal is a signal for the terminal device, the resource indication information is used by the terminal device to determine resource information occupied by data associated with the trigger signal.

In some embodiments, the data associated with the trigger signal is downlink data, and the resource information occupied by the data associated with the trigger signal is used for the terminal device to receive the data associated with the trigger signal.

In some embodiments, the resource indication information is also used to indicate the resource information occupied by the feedback information corresponding to the data associated with the trigger signal, wherein the resource information occupied by the feedback information corresponding to the data associated with the trigger signal is used for the The terminal device sends a first backscattered signal, which carries feedback information corresponding to data associated with the trigger signal.

Amplitude modulation, phase modulation, frequency modulation.

In some embodiments, the data associated with the trigger signal is uplink data or sidelink data, wherein the resource information occupied by the data associated with the trigger signal is used for the terminal device to send the second backscatter signal, and the second backscatter signal The scatter signal carries data associated with the trigger signal.

Amplitude modulation, phase modulation, frequency modulation.

In some embodiments, the communication unit 410 is also used to power the terminal device through continuously sending power supply signals.

In some embodiments, the above-mentioned communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip.

It should be understood that the network device 400 according to the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the above and other operations and/or functions of each unit in the network device 400 are respectively to implement the method shown in Figure 9 The corresponding process of the network equipment in 200 will not be repeated here for the sake of simplicity.

Figure 17 is a schematic structural diagram of a communication device 500 provided by an embodiment of the present application. The communication device 500 shown in Figure 17 includes a processor 510. The processor 510 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

In some embodiments, as shown in Figure 17, communication device 500 may also include memory 520. The processor 510 can call and run the computer program from the memory 520 to implement the method in the embodiment of the present application.

The memory 520 may be a separate device independent of the processor 510 , or may be integrated into the processor 510 .

In some embodiments, as shown in Figure 17, the communication device 500 may also include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, specifically, may send information or data to other devices, or Receive information or data from other devices.

Among them, the transceiver 530 may include a transmitter and a receiver. The transceiver 530 may further include an antenna, and the number of antennas may be one or more.

In some embodiments, the communication device 500 can be specifically a network device according to the embodiment of the present application, and the communication device 500 can implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, this is not mentioned here. Again.

In some embodiments, the communication device 500 can be a terminal device according to the embodiment of the present application, and the communication device 500 can implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, this is not mentioned here. Again.

Figure 18 is a schematic structural diagram of the device according to the embodiment of the present application. The device 600 shown in Figure 18 includes a processor 610. The processor 610 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

In some embodiments, as shown in Figure 18, device 600 may also include memory 620. The processor 610 can call and run the computer program from the memory 620 to implement the method in the embodiment of the present application.

The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

In some embodiments, the device 600 may also include an input interface 630. The processor 610 can control the input interface 630 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.

In some embodiments, the device 600 may also include an output interface 640. The processor 610 can control the output interface 640 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.

In some embodiments, the device can be applied to the network device in the embodiment of the present application, and the device can implement the corresponding processes implemented by the network device in the various methods of the embodiment of the present application. For the sake of brevity, the details are not repeated here.

In some embodiments, the device can be applied to the terminal device in the embodiments of the present application, and the device can implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, the details will not be described again.

In some embodiments, the devices mentioned in the embodiments of this application may also be chips. For example, it can be a system-on-a-chip, a system-on-a-chip, a system-on-a-chip or a system-on-a-chip, etc.

Figure 19 is a schematic block diagram of a communication system 700 provided by an embodiment of the present application. As shown in FIG. 19 , the communication system 700 includes a terminal device 710 and a network device 720 .

Among them, the terminal device 710 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 720 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they will not be mentioned here. Repeat.

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip and has signal processing capabilities. During the implementation process, each step of the above method embodiment can be completed through an integrated logic circuit of hardware in the processor or instructions in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available processors. Programmed logic devices, discrete gate or transistor logic devices, discrete hardware components. Each method, step and logical block diagram disclosed in the embodiment of this application can be implemented or executed. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which is used as an external cache. By way of illustration, but not limitation, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

It should be understood that the above memory is an exemplary but not restrictive description. For example, the memory in the embodiment of the present application can also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, memories in embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

Embodiments of the present application also provide a computer-readable storage medium for storing computer programs.

In some embodiments, the computer-readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiment of the present application. For the sake of simplicity, I won’t go into details here.

In some embodiments, the computer-readable storage medium can be applied to the terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiment of the present application. For the sake of simplicity, I won’t go into details here.

An embodiment of the present application also provides a computer program product, including computer program instructions.

In some embodiments, the computer program product can be applied to the network equipment in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application. For simplicity, in This will not be described again.

In some embodiments, the computer program product can be applied to the terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiment of the present application. For simplicity, in This will not be described again.

An embodiment of the present application also provides a computer program.

In some embodiments, the computer program can be applied to the network equipment in the embodiments of the present application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application. For the sake of brevity, no further details will be given here.

In some embodiments, the computer program can be applied to the terminal device in the embodiments of the present application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, no further details will be given here.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. In view of this understanding, the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code. .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

A method of wireless communication, characterized by including:

The terminal device receives the trigger signal;

Wherein, the trigger signal carries identification information and resource indication information, the identification information is used to indicate whether the trigger signal is a signal for the terminal device, and the resource indication information is used to indicate whether the trigger signal is associated with the Resource information occupied by data. The terminal device obtains energy through energy collection for communication, information collection and processing.
The method of claim 1, characterized in that:

The resource indication information at least includes an offset value relative to a reference resource location, or the resource indication information at least includes an offset value based on the resource location occupied by the trigger signal.
The method according to claim 1 or 2, characterized in that,

The identification information is a terminal inherent identification, or the identification information is a terminal identification registered in the network.
The method according to any one of claims 1 to 3, characterized in that,

The resources indicated by the resource indication information include at least one of the following: time domain resources, frequency domain resources, code domain resources, and air domain resources.
The method of claim 4, characterized in that:

The frequency domain resource occupies at least one carrier in the frequency domain, or the frequency domain resource occupies at least one subcarrier in the frequency domain.
The method according to any one of claims 1 to 5, characterized in that,

The data associated with the trigger signal includes at least one of the following: downlink data, uplink data, and sidelink data.
The method according to any one of claims 1 to 6, characterized in that,

The trigger signal carries the identification information and the resource indication information through one of the following modulation methods:

Amplitude modulation, phase modulation, frequency modulation.
The method according to any one of claims 1 to 7, characterized in that,

The trigger signal also carries at least one of the following information corresponding to the data associated with the trigger signal:

Modulation order, modulation method, coding rate, coding method, number of data bits.
The method according to any one of claims 1 to 8, characterized in that, in the case where the identification information indicates that the trigger signal is a signal for the terminal device, the method further includes:

The terminal device determines resource information occupied by data associated with the trigger signal according to the resource indication information.
The method of claim 9, characterized in that:

The data associated with the trigger signal is downlink data, and the method further includes:

The terminal device receives the data associated with the trigger signal according to the resource information occupied by the data associated with the trigger signal.
The method of claim 10, wherein the resource indication information is also used to indicate resource information occupied by feedback information corresponding to data associated with the trigger signal, and the method further includes:

The terminal device determines the resource information occupied by the feedback information corresponding to the data associated with the trigger signal according to the resource indication information;

The terminal device sends a first backscatter signal according to the resource information occupied by the feedback information corresponding to the data associated with the trigger signal, wherein the first backscatter signal carries the data corresponding to the trigger signal. Feedback.
The method of claim 11, characterized in that:

The first backscattered signal carries feedback information corresponding to the data associated with the trigger signal through one of the following modulation methods:

Amplitude modulation, phase modulation, frequency modulation.
The method of claim 9, characterized in that:

The data associated with the trigger signal is uplink data or sidelink data, and the method further includes:

The terminal device sends a second backscattered signal according to the resource information occupied by the data associated with the trigger signal, wherein the second backscattered signal carries the data associated with the trigger signal.
The method according to any one of claims 10 to 13, characterized in that,

The modulation method used for the data associated with the trigger signal includes one of the following:

Amplitude modulation, phase modulation, frequency modulation.
The method according to any one of claims 1 to 14, characterized in that,

The trigger signal is the energy supply signal of the terminal device.
The method according to any one of claims 1 to 14, characterized in that the method further includes:

The terminal device obtains energy through the energy supply signal continuously sent by the network device.
The method of claim 16, wherein the continuously sent energy supply signal is a constant amplitude continuous wave signal.
A method of wireless communication, characterized by including:

The network device sends a trigger signal;

Wherein, the trigger signal carries identification information and resource indication information, the identification information is used to indicate whether the trigger signal is a signal for a terminal device, and the resource indication information is used to indicate where the data associated with the trigger signal is. Occupied resource information, the terminal device obtains energy through energy collection for communication, information collection and processing.
The method of claim 18, characterized in that:

The resource indication information at least includes an offset value relative to a reference resource location, or the resource indication information at least includes an offset value based on the resource location occupied by the trigger signal.
The method according to claim 18 or 19, characterized in that,

The identification information is a terminal inherent identification, or the identification information is a terminal identification registered in the network.
The method according to any one of claims 18 to 20, characterized in that,

The resources indicated by the resource indication information include at least one of the following: time domain resources, frequency domain resources, code domain resources, and air domain resources.
The method of claim 21, characterized in that:

The frequency domain resource occupies at least one carrier in the frequency domain, or the frequency domain resource occupies at least one subcarrier in the frequency domain.
The method according to any one of claims 18 to 22, characterized in that,

The data associated with the trigger signal includes at least one of the following: downlink data, uplink data, and sidelink data.
The method according to any one of claims 18 to 23, characterized in that,

The trigger signal carries the identification information and the resource indication information through one of the following modulation methods:

Amplitude modulation, phase modulation, frequency modulation.
The method according to any one of claims 18 to 24, characterized in that,

The trigger signal also carries at least one of the following information corresponding to the data associated with the trigger signal:

Modulation order, modulation method, coding rate, coding method, number of data bits.
The method according to any one of claims 18 to 25, wherein when the identification information indicates that the trigger signal is a signal for the terminal device, the resource indication information is used for the The terminal device determines the resource information occupied by the data associated with the trigger signal.
The method of claim 26, wherein:

The data associated with the trigger signal is downlink data, and the resource information occupied by the data associated with the trigger signal is used by the terminal device to receive the data associated with the trigger signal.
The method of claim 27, wherein the resource indication information is also used to indicate resource information occupied by feedback information corresponding to the data associated with the trigger signal, wherein the data associated with the trigger signal corresponds to The resource information occupied by the feedback information is used by the terminal device to send a first backscattered signal, where the first backscattered signal carries feedback information corresponding to data associated with the trigger signal.
The method of claim 28, characterized in that:

The first backscattered signal carries feedback information corresponding to the data associated with the trigger signal through one of the following modulation methods:

Amplitude modulation, phase modulation, frequency modulation.
The method of claim 26, wherein the data associated with the trigger signal is uplink data or sidelink data, wherein the resource information occupied by the data associated with the trigger signal is used by the terminal device to send the first Two backscattered signals, the second backscattered signal carries data associated with the trigger signal.
The method according to any one of claims 27 to 30, characterized in that,

The modulation method used for the data associated with the trigger signal includes one of the following:

Amplitude modulation, phase modulation, frequency modulation.
The method according to any one of claims 18 to 31, characterized in that,

The trigger signal is the energy supply signal of the terminal device.
The method according to any one of claims 18 to 31, characterized in that the method further includes:

The network device supplies energy to the terminal device by continuously sending energy supply signals.
The method of claim 33, wherein the continuously sent energy supply signal is a constant amplitude continuous wave signal.
A terminal device, characterized by including:

Communication unit, used to receive trigger signals;

Wherein, the trigger signal carries identification information and resource indication information, the identification information is used to indicate whether the trigger signal is a signal for the terminal device, and the resource indication information is used to indicate whether the trigger signal is associated with the Resource information occupied by data. The terminal device obtains energy through energy collection for communication, information collection and processing.
A network device, characterized by including:

Communication unit, used to send trigger signals;

Wherein, the trigger signal carries identification information and resource indication information, the identification information is used to indicate whether the trigger signal is a signal for a terminal device, and the resource indication information is used to indicate where the data associated with the trigger signal is. Occupied resource information, the terminal device obtains energy through energy collection for communication, information collection and processing.
A terminal device, characterized in that it includes: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the steps as claimed in the right The method of any one of claims 1 to 17.
A network device, characterized in that it includes: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, so that the network device executes as claimed The method of any one of claims 18 to 34.
A chip, characterized in that it includes: a processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 17.
A chip, characterized in that it includes: a processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 18 to 34.
A computer-readable storage medium, characterized in that it is used to store a computer program, the computer program causing the computer to execute the method according to any one of claims 1 to 17.
A computer-readable storage medium, characterized in that it is used to store a computer program, the computer program causing the computer to execute the method according to any one of claims 18 to 34.
A computer program product, characterized by comprising computer program instructions, which cause a computer to execute the method according to any one of claims 1 to 17.
A computer program product, characterized by comprising computer program instructions, which cause a computer to execute the method according to any one of claims 18 to 34.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 17.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 18 to 34.